"中国共产党党内统计公报" [Communist Party of China Party Statistics Announcement]. Qiushi (in Chinese). Xinhua News Agency. 30 June 2023. Retrieved 30 June 2023.
v-dem.net
These calculations are based on parties for which sufficient data is available. See Starr, Richard (March–April 1986). "Checklist of Communist Parties in 1985". Problems of Communism. Vol. 35. pp. 62–66., and the V-Dem (Varieties of Democracy) Dataset at https://v-dem.net/en/data/[permanent dead link].